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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 114 days
sow gestation
6-8 weeks
reasons for castration
#1 cost in production
2. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
growth lost from castration methods (knife & band)
sperm cell
Avg. bull specs
feeding a high producing dairy cow
3. Male on one pin and female on other side
libido test (BSE)
rectal palpation (BSE)
mastitis
ewe estrus
4. Failure to have both testis (gonads) descend
Avg. bull specs
cryptorchid
penis sizes vs delivering methods
ewe estrus cycle
5. 283 days
cow gestation
ewe gestation
testosterone
monorchid
6. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
scrotum
cryptorchid
testosterone
Reasons for gestation length being affected
7. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
urethra
age and castration
Lutinizing Hormone in males
ewe's estrous cycle
8. Duct through penis that carries sperm and urine
cow estrus cycle
urethra
oviducts
penis proper
9. Produce testosterone. located between the seminiferous tubules
leydid or interstitial cells
retractor muscles
urethra
monorchid
10. Actual heat cycle (period)
Sperm survival specs
vagina
estrus
Where livelihood is in agriculture
11. Start of the reproductive tract for the female. located outside of the body
colostrum
Sperm survival specs
vulva
sow ovulation
12. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
butterfat
stag
why does the cow need fat deposits during pregnancy?
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
13. Days which have decreasing daylight hours
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14. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
organs used in spermatogenesis
prostaglandin
polyestrous
reason for seasonal breeding periods
15. ~305 days (altough often longer due to breeding difficulties)
Hard
Follical Stimulating in males
dairy cattle pregnancy check
Dairy Cattle Lactation (standard)
16. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
colostrum
#1 cost in production
cow ovulation
feeding a high producing dairy cow
17. To remove/separate testicles from animal's body before animal reaches puberty
mastitis
estrous
mare's estrous cycle
castration
18. Sperm production
spermatogenesis
monorchid
ewe's estrous cycle
retractor muscles
19. When are dairy cattle dehorned?
cervix
~1 month
Bull's fibro-elastic penis
Avg. bull specs
20. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
accessory sex glands
Dairy Cattle milking schedule
mastitis
visual evaluation (BSE)
21. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
pelvis
monorchid
eminal vesicles
1. more cost effective - 2. powdered milk is in excess production
22. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
cow gestation
mare estrus
purpose of Breeding Soundness Exam (BSE) for males
penis proper
23. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
1. more cost effective - 2. powdered milk is in excess production
dartos muscle
butterfat
24. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
prostate gland
behavioral signs of estrus
testosterone
semen evaluation (BSE)
25. Important 'landmark' during palpation
pelvis
6-8 weeks
Dairy Cattle milking schedule
cervix
26. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
polyestrous
functions of progestrone
leydid or interstitial cells
27. 336 days
Brown Swiss Cow
seminiferous tubules
stag
mare gestation
28. 19-23 (21) days
Follical Stimulating in females
cow estrus cycle
mare ovulation
semen evaluation (BSE)
29. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
ewe estrus
ewe estrus
scrotal circumference (BSE)
mare's estrous cycle
30. Implies the amount of estrogen production
6-8 weeks
femininity of a heifer
functions of progestrone
age and castration
31. 30-38 hours after estrus cycle begins
ewe ovulation
visual evaluation (BSE)
cryptorchid
sow ovulation
32. 24 hours before end of estrus cycle
mare ovulation
organs used in spermatogenesis
ewe estrus
mare estrus
33. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
sigmoid flexure
cryptorchid
retractor muscles
scrotum
34. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
leydid or interstitial cells
Dairy Cattle Gestation
Where livelihood is in agriculture
burdizzo
35. 147 days
cervix
ewe gestation
cremaster muscle
Dairy calves are removed from cow at birth to...
36. Days which have increasing daylight hours
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37. The more stressed out the male is - the less sperm he is going to produce
humans: stress level vs sperm
cowper's gland
Bull's fibro-elastic penis
Grading choice
38. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
sow estrus cycle
epididymis: definition - 3 parts - 4 functions
visual evaluation (BSE)
accessory sex glands
39. Way to know everything is alright with the breeding male
Lutinizing Hormone in females
purpose of Breeding Soundness Exam (BSE) for males
effects of BST
cremaster muscle
40. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
Hard
Sperm survival specs
hormones
4 major reasons for culling dairy cows
41. FEED
pelvis
4 major reasons for culling dairy cows
#1 cost in production
Sperm survival specs
42. 14-19 (17) days
age and castration
hormones
ewe estrus cycle
penis sizes vs delivering methods
43. Days which have increasing daylight hours
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44. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
Avg. bull specs
ewe ovulation
rectal palpation (BSE)
pelvis
45. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
retractor muscles
butterfat
sow ovulation
Mares
46. Failure to have both testis (gonads) descend
hypothalamus and pituitary gland
cryptorchid
scrotum
Size of cow in relation to the amount of milk produced
47. Implies the amount of estrogen production
what has to happen for males for copulation to occur
Dairy calves are removed from cow at birth to...
normal presentation of the fetus
femininity of a heifer
48. 14-19 (17) days
ewe estrus cycle
Blood
ewe estrus
Dairy calves are removed from cow at birth to...
49. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
uterus
rectal palpation (BSE)
Blood
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
50. Depository for semen during insemination. where urine leaves the body
vagina
vulva
mare estrus
Sperm survival specs